Update documentation to be consistent with release version

[rmcdermo]

Friendly reminder.

[rpeacoc]

Manuals page should be updated now

[rmcdermo]

Please make sure the CFAST Version in the documents is consistent with the code. Just looking at the first document, the user guide, it says Version 7.7.0.

[rpeacoc]

Documents updated to 7.7.3. For the next "real" release, we'll update them to the way FDS does it with just the git tag to identify it

[mcgratta]

I just downloaded the latest CFAST and I see

Why does it say CFAST Version 7.7.3 when the git hash indicates 7.7.4. And why is the git has different in the Help menu.

[preneke]

All manuals are up to date and everything will be in sync at the next release.